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This is probably one of the easiest alternators I have put on in a while. Have had it on a month with no issues.

For my Tahoe I needed a 15mm socket for the 2 Alternator bolts and a 15mm for the belt ten-pulley. I believe it was a 7/16" or 10mm wrench for the positive on alternator. A lot easier to pop off the plastic intake cover.

I had to do this in a gas station parking lot omw to work. Took me about 30 minutes. It is a little rough to work it back in if the guide shims are in tight...but 2 bolts and easy off/back on.

Pros: Very easy install. Charges good (13-14v by gauge most of the time)